Brother HL-4040CN Service Manual page 23

Error code 54
Fuser Unit End
Replace the fuser unit
User Check
- Replace the fuser unit with a new one.
- After replacing the fuser unit, reset the counter using the control panel on the machine.
(Refer to "2.3 Parts Life Reset Function"
Error code 55
Laser Unit End
Replace the laser unit
User Check
- Replace the laser unit with a new one.
- After replacing the laser unit, reset the counter using the control panel on the machine.
(Refer to "2.3 Parts Life Reset Function"
Error code 5E
Change Belt Unit
Replace the belt unit
User Check
- Replace the belt unit with a new one.
- After replacing the belt unit, reset the counter using the control panel on the machine.
(Refer to "2.3 Parts Life Reset Function"
Error code 75
Cooling Down
Cooling down the inside of the machine to protect it.
The machine indicates "Cooling Down" in one of the conditions below.
(1) The temperature inside the machine is high.
(2) Both ends of the heat roller are heated extraordinarily.
(3) The paper media is replaced.
in Chapter 2.)
in Chapter 2.)
in Chapter 2.)
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